function [ status ] = mx_eyelink_get_node( )
%MX_EYELINK_GET_NODE Reads the responses returned by other trackers or remotes
% in response to eyelink_poll_trackers() or eyelink_poll_remotes(). It can also 
% read the tracker broadcast address and remote broadcast addresses.
%
% Parameters:
% resp 	Number of responses to read:0 gets our data, 1 get first response, 2
% gets the second response, etc. -1 to read the tracker broadcast address. -2 
% to read remote broadcast addresses.
% 
% Returns:
% 0 if OK, -1 if node response number is too high.
% data 	Pointer to buffer of ELINKNODE type, to hold name and ELINKADDR of 
% the respondent.
% 
%----------------------------------------------------------------------------
% Copyright Eduardo Aponte 2013
% aponteeduardo@gmail.com